JBL PartyBox 300 Review

JBL PartyBox 300 Review

The JBL PartyBox 300 is the predecessor of the PartyBox 310, which we also subjected to a practical test. The most striking differences between the otherwise very similar speakers are the slightly smaller dimensions of the 300 model.

This is lighter than its big sister and weighs a few grams less. In terms of price, however, the two models are cheap. However, with the manufacturer JBL, the relationship between price and performance can be assumed to be consistent.

We checked for you in our test report whether this also applies to the PartyBox 300. Should you buy the PartyBox 310, which costs the same, or does the previous model do a few things better? You can find that and more in our practice test of the PartyBox 300.


  • Clear PA sound for outdoor parties
  • Real deep bass conveys a festival/club feeling
  • Light patterns create a party mood


  • Inferior to the PartyBox 310

Design and workmanship of the JBL PartyBox 300

The JBL PartyBox 300 measures 69 x 32 x 31 centimeters and is slightly smaller than its big sister, the PartyBox 310. This has 69 x 33 x 37 centimeters and weighs an impressive 17.42 kilograms. With almost 15.8 kilograms, the PartyBox 300 also weighs a little less.

In order to be able to transport the heavyweight Bluetooth speaker reasonably comfortably, two handles are attached to the back of the housing, which is quite comfortable to hold thanks to the rubberized surface. In contrast to the PartyBox 310, however, JBL, unfortunately, does not have wheels on the underside of the device with the 300 models, which would make it easier to transport the speaker.

That’s a pity, of course – because, despite the small difference in weight, the PartyBox 300 is still a real powerhouse. Otherwise, the two PartyBoxes from the JBL are very similar in appearance. As with the successor, the color design of the PartyBox 300 is kept in classic black, with orange accents setting visual highlights. So, the speaker makes a lot of visuals. In addition, the front of the PartyBox 300 is completely encased in a delicate grid that protects the loudspeaker membranes behind it from bumps and knocks.

Light rings made of LED lamps are attached around the membranes, which change color to match the music being played. These light effects make the PartyBox 300 a real eye-catcher and can further enhance your party with atmospherically appropriate light patterns.

The PartyBox 300’s control buttons are located on the top of the robust plastic housing. There are three buttons on the left that you can use to start or stop music playback and two buttons to increase or decrease the playback volume. Below these three control buttons is the so-called Bass Boost button. You can use this to increase the bass intensity of the PartyBox 300 in two stages and thus adapt it to your personal preferences. To the right of these control, buttons are three more buttons.

The lowest of these buttons is used to switch between different light patterns in which the LED rings on the speaker membranes should glow. You can also toggle a strobe light on or off by holding this button down for two seconds. The luminous PA system brings a real disco feeling into your living room!

Above this button is the Bluetooth button, which you can connect your PartyBox 300 to a mobile device. Again, above this is the power button of the device, with which you can switch the device on or off. In addition, a battery level indicator is integrated into the top of the speaker housing, which informs you about the charge level of the device battery with the help of five LEDs.

If all five lamps light up white, the PartyBox battery is fully charged, and your Bluetooth speaker is ready for use. Last but not least, there is a dock for mobile devices on the top of the speaker, on which you can place your smartphone, for example. The dock gives your mobile phone a secure footing.

Numerous cable connections are embedded in the back of the PartyBox 300, which gives the speaker a high level of connectivity. First of all, there is, of course, a connection for an AC power cable, which you use to connect your speaker to the AC mains plug it in to charge its built-in lithium-ion battery.

The PartyBox 300 also has a USB port. This is used to play music on a USB storage device such as a USB stick or an MP3 player. If you connect such a device to the speaker, the music stored will be played back automatically. You can also use the USB port to charge the batteries of other devices via your PartyBox. This means you can also use the Bluetooth speaker as a power bank, with which you can charge your cordless devices on the go. You can also connect your speaker to an analog device that cannot establish a Bluetooth connection via the input and output connections. This could be a TV or a record player, for example.

Unfortunately, such a cable is not included in the scope of delivery of the speaker. Finally, the PartyBox 300 also has connections for a microphone and a guitar; you can connect instruments to the JBL PartyBox 300 to perform your latest compositions. You can adjust the volume and gain of the microphone and guitar using two rotary wheels, which are also located on the back of the speaker.

Finally, elements for coupling several JBL loudspeakers are attached to the back of the housing. Several devices can be connected via a 3.5 mm jack plug or the true wireless stereo mode (TWS). But more about that in the “Functional range” section.

All the controls of the PartyBox 300 make a flawless impression; all parts are robustly embedded in the housing. As a result, the Party Box is a real eye-catcher and ideally processed. In addition, to the PartyBox 300 itself, the scope of delivery of the Bluetooth speaker also includes a power supply cable, a 12 V DC cable, a safety data sheet, and a quick start guide.

The functional scope of the PartyBox 300

The PartyBox 300 has two 6.5″ woofers and three 2.25″ tweeters. The woofers are those responsible for the tones in the low-frequency range, and the tweeters are responsible for the high tones. The output power of the speaker is 120 watts, and it is also supported with an amplification power of 240.

The frequency response of the PartyBox 300 is specified by the manufacturer between 45 Hz and 20 kHz, the maximum Bluetooth range of the portable speaker is 10 meters. This means that the full Bluetooth range of the PartyBox 300 for PA systems is normal – none of the PA speakers and party boxes we tested have a greater range.

Only the Bose S1 Pro system has a shorter range to be presented, whose maximum Bluetooth range is 9 meters. The PartyBox 300’s built-in and rechargeable lithium-ion battery has a capacity of 10,400 mAh and takes 5 hours to be fully charged. This means that the charging time of the 300 models is around one and a half hours longer than that of the PartyBox 310, which only takes 3.5 hours to charge. However, the maximum battery life of the two Bluetooth speakers is identical and is 18 hours each.

Technical data of the PartyBox 300

  • Dimensions: 69 x 32 x 31 cm
  • Weight: 15.84 kg
  • Battery life max: 18 hours
  • Battery type/capacity: 10400mAh
  • Charging time: 5 hours
  • Multiple speakers connectable: Yes
  • Frequency Response: 45Hz to 20kHz
  • Other inputs: Microphone and guitar inputs with volume control
  • NFC: No
  • Scope of delivery: quick start guide, warranty card, safety data sheet, power supply cable, 12 V DC cable
  • Drivers: 2 x 6.5″ woofers, 3 x 2.25″ tweeters
  • Power: 120 watts & 240 watts of amplifier power

This puts the battery performance of the JBL PartyBox 300 in the upper midfield; the Teufel BOOMSTER XL, for example, also has a battery life of 18 hours. The Teufel Rockster Air, on the other hand, shines with a battery life of 30 hours – which makes it the test winner in this respect. T

The JBL PartyBox On-The-Go has the shortest battery life of just 6 hours. However, the actual playback time depends on the volume and other influences, such as the ambient temperature. As a result, the actual battery life can deviate from the manufacturer’s specifications. Furthermore, the PartyBox 300 is equipped with an IPX4 protection class, which protects the portable PA system from splashing water and ensures that the speaker can withstand a certain degree of moisture.

For example, if the speaker is next to the pool and gets wet when someone jumps into the pool, that’s no problem. Rainfall is also okay as long as the PartyBox 300 is not exposed to it for too long. However, you cannot take the speaker into the pool – the IPX4 protection class is not sufficient to completely protect the Bluetooth speaker from water.

The protection class also does not completely protect the speaker from dust, sand, and other foreign bodies. So, if you want to use the PartyBox 300 on the beach or in other very dusty places, you should take a little more care of the device. The PartyBox 300 also has an integrated battery level indicator and colored LED rings that light up in colorful light patterns in sync with the beat of the music being played.

You can use the corresponding button on the device’s top to switch between different light and color patterns. You can also connect a microphone and a guitar to the speaker. The PartyBox 300 then acts as an amplifier, which you can use to power your voice or instrument. So, you can turn your house party into a real live concert or a cozy karaoke evening. The JBL PartyBox is also suitable for musicians who want to perform in smaller locations. You have everything you need for a successful performance so go with the portable Bluetooth speaker.

However, the range of functions of the JBL PartyBox 310 is a little larger. With this, you can customize the speaker’s sound to suit your preferences. For example, you can add an echo effect to the sound of your microphone or guitar, accentuate the treble or boost the bass.

The latter is also possible with the PartyBox 300 via the bass boost button. You can use this button to boost the bass in two stages. First, if you want to play your music loud, you can connect several PartyBoxes. This can be done with a 3.5mm jack cable or a Bluetooth connection. You can pair two PartyBoxes in TWS mode (True Wireless Stereo) via a Bluetooth connection; Press and hold the Bluetooth button on both speakers for 5 seconds at the same time.

This is how the TWS connection is established. By default, the speaker connected to your smartphone is the master speaker (L channel), the second Bluetooth speaker is the slave speaker (R channel). If you press the L/R button on the back of the device, you can switch between the L channel, R channel, and stereo for the master speaker. The second speaker adopts the setting automatically. If you want to disconnect the two paired PartyBoxes and end the true wireless stereo mode, all you have to do is press and hold the Bluetooth button again or switch off one of the two speakers. In return, however, the PartyBox 300 does not have a hands-free function that could be used to answer calls.

But that’s not too bad. Like its successor, the PartyBox 300 was designed as a party speaker – and you shouldn’t make a lot of phone calls at parties anyway. But if you value a hands-free system, you should consider the JBL Xtreme 2 or the JBL Xtreme 3. These two models are a bit handier than the PartyBox 300 and have a hands-free system that you can use to make good-quality calls.

Practical test of the PartyBox 300

You have to fully charge the integrated lithium-ion battery before you can put the PartyBox 300 into operation. This contributes to the longevity of the rechargeable battery. The battery status indicator on the top of the housing informs you about the battery status.

If all five LED lamps light up white, the battery is fully charged, and you can start playing music via the PartyBox. To then connect the PartyBox 300 to your smartphone or tablet, all you have to do is activate the Bluetooth function of the speaker and your end device. You then have to select the PartyBox 300 from the list of available Bluetooth devices.

The pairing of several JBL loudspeakers in TWS mode is also very quick and uncomplicated with the speaker. The controls of the PartyBox 300 have a pleasant pressure point, which makes handling the device very easy. However, JBL has dispensed with app support for the PartyBox 300. The JBL PartyBox app only supports the JBL Partybox 310. You can use the app to control the speaker from the couch conveniently and at the same time expand the speaker’s range of functions. In addition, you can use the app to personalize your PartyBox 310; for example, rename it and download additional software updates.

Sound quality and volume

In terms of sound quality, the PartyBox 300 is very similar to its successor model, the PartyBox 310. As with this one, the jukebox bass is very intense and thumps through the room so powerfully that a real club feeling is created. Only the JBL Boombox 2 can keep up here in terms of bass. The volume of the Bluetooth speaker is also impressive, although the maximum level of the PartyBox 310 is a bit higher. The general sound quality of the PartyBox 300, on the other hand, is congruent with that of the subsequent model.

The Public Access Speaker delivers an amazingly good sound; the mids and highs are tidy and clean. The output quality of connected microphones or guitars is also first-class – this makes the jukebox ideal for karaoke parties or solo entertainers looking for the right equipment for their performances. However, the JBL PartyBox 300 is perhaps a bit too powerful for the’ normal’ house party. After all, the PartyBox 300 is a so-called PA box that has been designed to provide sound for the audience at concerts or other events.


The PartyBox 300 is a powerful PA system whose very high processing and sound quality. Anything else would have surprised us with the well-known manufacturer. Like its successor, the PartyBox 310, the jukebox is equipped with powerful bass woofers and tweeters that give you a wonderfully balanced and powerful sound.

However, the range of functions of the successor model is somewhat larger. For example, this allows you to make more changes to the sound settings. With the PartyBox 300, JBL also does without rollers on the underside of the housing, which would make transporting the device significantly easier – with a weight of almost 15.8 kilograms, the PA speaker is anything but lightweight.

Since the JBL PartyBox 310 can do everything that the 300 models can do but has even more features, we recommend that you buy the successor model – especially since the two Bluetooth speakers are also very similar in price. However, if you can get hold of the PartyBox 300 at a reduced price, then you should grab it. The PA system did an impeccable job and created the right atmosphere for each of your parties.

JBL PartyBox 300 Review
JBL PartyBox 300 Review


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